I like it when someone clearly defines what the vague words in their question mean.
though, it is proven to be still difficult to answer because either everyone is very generous here and everything is above 8 stars
or it is because of the way the star ratings are calculated here
(
case in point)
but I managed to find a few titles that I liked and were under 8 stars
Marmalade Boy, it's cute, really weird and funny family tree, and it has
continuation which I find really interesting because the family tree is even more complicated
Toshiue no Hito
a bit risque, very much Amazume Ryuta's manga, weird plot halfway through, but I still enjoyed it
maybe also try
Happy Negative Marriage just because
I was going to put
Hatsukoi Limited, that's why I found that anomaly in the star rating here
not as popular as Ichigo, but back in high school, I really enjoyed this and
Anedoki
which also reminded me of
Ai Kora
there you go, really hard to find something that I like and below 8 stars here
admittedly I don't really use the star rating here
might be able to give better recommendation if it is based on MAL score